Search

Lilium spp. is one of important ornamental plant commodities in Indonesia, however development of the plant commercially is constrained by availability of qualified-planting materials. Objective of the study was to test responses of lily types in different vernalization periods on vegetative and generative growth performances under plastic house. Materials used in the research were Lilium bulbs of Lilium longiflorum, L. 'Renata', L. 'Delina', L. 'Liana', Asiatic and local Cipanas lily in 3.5-4.5 cm in diameter. These bulbs were vernalized in 4°C from 6, 7, 8 and 9 weeks, respectively. The experiment was arranged in a split plot design with three replications, where lily types were as main plot and vernalization periods as subplot. Results of the study revealed that each type of lily exhibited different performances compared to others. More uniform performances with 8.3 and 5.7 plants flowered per replication, 71.8 and 84.3 days initial flower buds opened and 4.5 and 4.9 cm bulb diameter, respectively were noted on L. 'Renata' and L. 'Delina'. The 4°C for 6 weeks was the optimal vernalization period in producing 6.3 plants flowered per replication with 2.9 flower buds per plant and 4.5 cm bulb diameter. Results of the study implicated that each lily types need different specific conditions for optimal growth performances. [ABSTRACT FROM AUTHOR]